NITROBASS - Bass Amplifier PEAVEY - Free user manual and instructions

USER MANUAL NITROBASS PEAVEY

NProfessional I T R OBass B AAmplifier SS™ O P E R AT I N G G U I D E Intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. CAUTION: Risk of electrical shock — DO NOT OPEN! CAUTION: To reduce the risk of electric shock, do not remove cover. No user serviceable parts inside. Refer servicing to qualified service personnel.

Congratulations on your purchase of the Peavey NitroBass™. The NitroBass includes an easy-touse, three-band active EQ with shiftable mid-range control and a contour control (for that smileyface EQ curve). These tone controls are so versatile you should be able to quickly dial up your own sound. Also provided are a buffered tuner send jack, an electronically balanced XLR line out with its own level control, pre-post EQ switch, and a ground lift switch. The XLR output is before the master volume control, so you can adjust your stage volume without affecting the send to the main sound system. A -10 dB input pad switch, footswitchable post-EQ effects loop, preamp output/power amp input patch points, and the DDT™ (speaker protection) enable/defeat switch add to the list of professional features found in the NitroBass. For more information on operation and specifications we suggest that you spend a few minutes to look through this manual. Pay close attention to the safety precautions. They contain warnings that concern the safety of both you and your amp. Thank you for buying Peavey! Features:

Compact top box design 450 watts into 2 Ω, 300 watts into 4 Ω, 170 watts into 8 Ω Three-band active EQ with shiftable mid-range control Contour control -10 dB pad switch (active/passive pickup switch) Buffered tuner send jack Footswitchable post-EQ effects loop Electronically balanced XLR jack Pre-/Post-EQ send switch for XLR jack Ground lift switch for XLR jack DDT™ speaker protection with defeat switch Preamp out/power amp in jacks

This receptacle is for the IEC line cord (included), which provides AC power to the unit. Connect the line cord to this connector and to a properly grounded AC supply. Damage to the equipment may occur if an improper line voltage is used. (See voltage marking on unit.) Never remove or cut the ground pin of the line cord plug. This unit is supplied with a properly rated line cord. When lost or damaged, replace this cord with one of the proper ratings.

As the colors of the wires in the mains lead of this apparatus may not correspond with the colored markings identifying the terminals in your plug, proceed as follows: (1) The wire which is colored green and yellow must be connected to the terminal which is marked by the letter E, or by the earth symbol, or colored green or green and yellow. (2) The wire which is colored blue must be connected to the terminal which is marked with the letter N, or the color black. (3) The wire which is colored brown must be connected to the terminal which is marked with the letter L or color red.

POWER SWITCH This switch is used to turn the NitroBass on or off. To turn the unit on, flip the switch to the “on” position.

Three-position, rocker-type switch, which for most applications should be operated in the center (zero) position. If hum or noise is present with the ground switch in the center position, place the ground polarity switch to positive or negative (+ or -) to minimize hum; should a problem continue, consult your authorized Peavey dealer, the Peavey factory, or a qualified service technician. Note: The ground switch is not available on 220/240 volt models.

FUSE The fuse is located within the fuse holder on the rear of the unit. If the fuse should fail, IT MUST BE REPLACED WITH THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT AND TO PREVENT VOIDING THE WARRANTY. If the amp repeatedly blows fuses, it should be taken to a qualified service center for repair.

Located on front panel this LED illuminates green when the Power Switch is in the “ON” position and AC power is supplied. During normal operation the LED also acts as a DDT indicator. The LED illuminates red when the DDT speaker protection is active. When DDT is defeated, the LED will illuminate red when clipping occurs.

INPUT JACK This input will accept signals from all types of bass pickups.

Provided for instruments that have extremely high output, which can result in overdriving (distorting) the input stage. Pressing the switch to its “in” or “active” position reduces the level of the input signal by 10 dB.

A 1/4" jack is provided for connecting an instrument tuner. This jack is buffered off the input jack so it is just like plugging directly into the tuner.

Controls the input gain of the preamplifier.

CONTOUR CONTROL Provides a specially voiced EQ as the knob is rotated clockwise. When the knob is fully counterclockwise (set to 0), there is no voicing added.

LOW CONTROL An active tone control (shelving type, ±15 dB) that varies the low frequency boost or cut.

MID CONTROL An active tone control (peak/notch, ±15 dB) that varies the midrange boost or cut.

Selects the frequency band (200 — 2 kHz) that the mid control cuts or boosts.

HIGH CONTROL An active tone control (shelving type, ±15 dB) that varies the high frequency boost or cut.

VOLUME CONTROL Controls the overall volume level of the amplifier. The final level adjustment should be made after the desired sound has been achieved.

Provides low impedance, electronically balanced signal for patching into a sound reinforcement or recording console.

Controls the output level of the balanced line out.

Allows selection between a Pre-EQ (switch set to the “out” position) or a Post-EQ (switch set to the “in” position) send to the XLR line out jack.

Provided to lift the ground on the XLR jack when ground loops are encountered.

Output for supplying signals to external low-level effects or signal processing equipment.

Input for returning signals from external low-level effects or signal processing equipment.

This jack accommodates the remote footswitch (optional part number 00051000 ON/OFF single button switch), which is used to remove the effects loop from the signal path. The remote footswitch essentially acts as a bypass to punch in or punch out from your external effects.

DDT™ speaker protection is defeated when the push button is in the “in” position. We recommend that DDT be enabled at all times to protect the speakers.

This 1/4" jack is used to route the preamp signal to external inputs, such as the input of an additional power amp. The signal is post volume control. Use of this jack does not defeat the signal to the NitroBass amp (some volume difference may be noticed due to the impedance change experienced when adding an external unit to the signal patch).

This 1/4" jack is used to input an external signal to the power amp section of the NitroBass. Using this jack will disconnect any signal from the preamp section. Using this jack along with the preamp out jack creates a possible second effects loop.

Use the Power Cord Retainers to wrap and store your cable while storing or transporting your NitroBass. It is best to disconnect the cord from the unit before wrapping.

SPEAKER OUTPUT JACKS

These two 1/4" jacks provide the powered signal from the amplifier. Each connector is electrically the same (in parallel). Use one of the jacks to connect your speaker cabinet and the other to add a second speaker cabinet in parallel. The minimum speaker load impedance is 2 ohms (or two 4-ohm speakers in parallel).

Warning: To prevent the amplifier from overheating, the front fan and rear-located vents

should always remain clear of obstructions.

Ground Lift Line Drivers

Buffer 170 Watts RMS with 8 Ohm load 300 Watts RMS with 4 Ohm load 450 Watts RMS with 2 Ohm load Minimum Load is 2 Ohms:

Contour Pre EQ Post EQ Pre/Post EQ Select Line Level Out -10 db Pad In/Out

Midrange Effects Loop Footswitch Effects Return Effects Loop -10 dB, 0, 315 VRMS Effects Send NITROBASS™ Recommend Settings Rock Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection” Slap Setting

Set to appropriate level for instrument used Set as necessary Doesn't matter when Mid is set to 0 NOTE: “DDT should be utilized for maximum speaker protection” Blues/ Country Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection”

NITROBASS™ SPECIFICATIONS SYSTEM SPECIFICATIONS: PREAMPLIFIER SECTION: Mains Fuse = 8 amps Mains Voltage = 120 VAC 60 Hz Power Consumption = 350 watts Hum and noise: Typically greater than -89 dB unweighted with controls set as follows… Pad = Passive Bright = Normal Pre gain = 5 Contour = 0 Low = 0 Mid = 0 Mid Shift = 1kHz High = 0 Volume = 5

SETTINGS FOR MEASUREMENTS UNLESS

OTHERWISE NOTED: Pad = out (Passive) Bright = out (Normal) Pre-Gain = 5 (12 o’clock) Contour = 0 (fully counterclockwise) Bass = 0 (12 o’clock) Mid = 0 (12 o’clock) Mid Shift = 0 (12 o’clock) High = 0 (12 o’clock) Master Volume = 10 (fully Clockwise) Line Out Level = 10 (fully Clockwise) INPUT SENSITIVITY (Level to achieve full power): With Pad Out... Nominal input: 100 mV RMS Minimum input: 9 mV(pre gain and master fully CW) Maximum input: 3.0 V(maximum signal at input before clipping occurs) POWER AMPLIFIER SECTION: PROTECTION: Electronic current limit protection circuit. Thermal protection circuit. D.C. crowbar protection circuit. DDT speaker protection circuit with defeat switch. Variable speed fan, thermally controlled With Pad -10 dB in: Nominal input: 315 mV RMS Minimum input: 28 mV (pre gain and master fully CW) Maximum input: 9 V (maximum signal at input before clipping occurs) GENERAL INFORMATION: Minimum load = 2 ohms Input sensitivity: 1.0 VRMS Two 1/4" speaker jacks in parallel EQUALIZATION: Bright boost: + 8 dB @ 5 kHz Contour: Special frequency compensation Bass: ± 15 dB @ 30 Hz, Shelving type Eq Mid : ± 15 dB @ 200 @ 2 kHz (Mid shift control determines center frequency) Mid Shift: 200 to 2 kHz High: ±15 dB @ 8 kHz, Shelving type Eq RATED POWER OUTPUT: 450 watts (30.00 V RMS) into 2 ohms 300 watts (34.64 V RMS) into 4 ohms 170 watts (36.88 V RMS) into 8 ohms

TYPICAL POWER OUTPUT

475 watts (30.82 V RMS) into 2 ohms with no more than 1% THD+N 308 watts (35.10 V RMS) into 4 ohms with no more than 1% THD+N 177 watts (37.63 V RMS) into 8 ohms with no more than 1% THD+N TUNER SEND: Instrument level through a buffer LINE OUT: -∞ to -10 dB (for nominal input). Level is dependent on level control setting and pre gain setting NOISE: Typically greater than 102 dB below full power @ 8 ohms unweighted EFFECTS LOOP: Set for -10 dB (0.315 V RMS) with pre @ 5, Master @ 10 Controlled via footswitch, ground tip to defeat. DDT Dynamic Range: Typically greater than +15 dB PREAMP OUTPUT: 1 V RMS nominal FREQUENCY RESPONSE: +0/-0.61 dB, 100mW to 160 W RMS, 20 Hz to 20 kHz (8 ohm load, typically below 0.2% THD+N)

Ground Lift Line Drivers

Buffer 170 Watts RMS with 8 Ohm load 300 Watts RMS with 4 Ohm load 450 Watts RMS with 2 Ohm load Minimum Load is 2 Ohms:

Contour Pre EQ Post EQ Pre/Post EQ Select Line Level Out -10 db Pad In/Out

Midrange Effects Loop Footswitch Effects Return Effects Loop -10 dB, 0, 315 VRMS Effects Send NITROBASS™ Recommend Settings Rock Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection” Slap Setting

Set to appropriate level for instrument used Set as necessary Doesn't matter when Mid is set to 0 NOTE: “DDT should be utilized for maximum speaker protection” Blues/ Country Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection”

This 1/4" jack is used to input an external signal to the power amp section of the NitroBass. Using this jack will disconnect any signal from the preamp section. Using this jack along with the preamp out jack creates a possible second effects loop.

Ground Lift Line Drivers

Buffer 170 Watts RMS with 8 Ohm load 300 Watts RMS with 4 Ohm load 450 Watts RMS with 2 Ohm load Minimum Load is 2 Ohms:

Contour Pre EQ Post EQ Pre/Post EQ Select Line Level Out -10 db Pad In/Out

Midrange Effects Loop Footswitch Effects Return Effects Loop -10 dB, 0, 315 VRMS Effects Send NITROBASS™ Recommend Settings Rock Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection” Slap Setting

Set to appropriate level for instrument used Set as necessary Doesn't matter when Mid is set to 0 NOTE: “DDT should be utilized for maximum speaker protection” Blues/ Country Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection”

NITROBASS™ SPECIFICATIONS SYSTEM SPECIFICATIONS: PREAMPLIFIER SECTION: Mains Fuse = 8 amps Mains Voltage = 120 VAC 60 Hz Power Consumption = 350 watts Hum and noise: Typically greater than -89 dB unweighted with controls set as follows… Pad = Passive Bright = Normal Pre gain = 5 Contour = 0 Low = 0 Mid = 0 Mid Shift = 1kHz High = 0 Volume = 5

SETTINGS FOR MEASUREMENTS UNLESS

OTHERWISE NOTED: Pad = out (Passive) Bright = out (Normal) Pre-Gain = 5 (12 o’clock) Contour = 0 (fully counterclockwise) Bass = 0 (12 o’clock) Mid = 0 (12 o’clock) Mid Shift = 0 (12 o’clock) High = 0 (12 o’clock) Master Volume = 10 (fully Clockwise) Line Out Level = 10 (fully Clockwise) INPUT SENSITIVITY (Level to achieve full power): With Pad Out... Nominal input: 100 mV RMS Minimum input: 9 mV(pre gain and master fully CW) Maximum input: 3.0 V(maximum signal at input before clipping occurs) POWER AMPLIFIER SECTION: PROTECTION: Electronic current limit protection circuit. Thermal protection circuit. D.C. crowbar protection circuit. DDT speaker protection circuit with defeat switch. Variable speed fan, thermally controlled With Pad -10 dB in: Nominal input: 315 mV RMS Minimum input: 28 mV (pre gain and master fully CW) Maximum input: 9 V (maximum signal at input before clipping occurs) GENERAL INFORMATION: Minimum load = 2 ohms Input sensitivity: 1.0 VRMS Two 1/4" speaker jacks in parallel EQUALIZATION: Bright boost: + 8 dB @ 5 kHz Contour: Special frequency compensation Bass: ± 15 dB @ 30 Hz, Shelving type Eq Mid : ± 15 dB @ 200 @ 2 kHz (Mid shift control determines center frequency) Mid Shift: 200 to 2 kHz High: ±15 dB @ 8 kHz, Shelving type Eq RATED POWER OUTPUT: 450 watts (30.00 V RMS) into 2 ohms 300 watts (34.64 V RMS) into 4 ohms 170 watts (36.88 V RMS) into 8 ohms

TYPICAL POWER OUTPUT

475 watts (30.82 V RMS) into 2 ohms with no more than 1% THD+N 308 watts (35.10 V RMS) into 4 ohms with no more than 1% THD+N 177 watts (37.63 V RMS) into 8 ohms with no more than 1% THD+N TUNER SEND: Instrument level through a buffer LINE OUT: -∞ to -10 dB (for nominal input). Level is dependent on level control setting and pre gain setting NOISE: Typically greater than 102 dB below full power @ 8 ohms unweighted EFFECTS LOOP: Set for -10 dB (0.315 V RMS) with pre @ 5, Master @ 10 Controlled via footswitch, ground tip to defeat. DDT Dynamic Range: Typically greater than +15 dB PREAMP OUTPUT: 1 V RMS nominal FREQUENCY RESPONSE: +0/-0.61 dB, 100mW to 160 W RMS, 20 Hz to 20 kHz (8 ohm load, typically below 0.2% THD+N)

Ground Lift Line Drivers

Buffer 170 Watts RMS with 8 Ohm load 300 Watts RMS with 4 Ohm load 450 Watts RMS with 2 Ohm load Minimum Load is 2 Ohms:

Contour Pre EQ Post EQ Pre/Post EQ Select Line Level Out -10 db Pad In/Out

Midrange Effects Loop Footswitch Effects Return Effects Loop -10 dB, 0, 315 VRMS Effects Send NITROBASS™ Recommend Settings Rock Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection” Slap Setting

Set to appropriate level for instrument used Set as necessary Doesn't matter when Mid is set to 0 NOTE: “DDT should be utilized for maximum speaker protection” Blues/ Country Setting Out Set to appropriate level for instrument used Set as necessary NOTE: “DDT should be utilized for maximum speaker protection”

Effective Date: July 1, 1998 What This Warranty Covers Your Peavey Warranty covers defects in material and workmanship in Peavey products purchased and serviced in the U.S.A. and Canada. What This Warranty Does Not Cover The Warranty does not cover: (1) damage caused by accident, misuse, abuse, improper installation or operation, rental, product modification or neglect; (2) damage occurring during shipment; (3) damage caused by repair or service performed by persons not authorized by Peavey; (4) products on which the serial number has been altered, defaced or removed; (5) products not purchased from an Authorized Peavey Dealer. Who This Warranty Protects This Warranty protects only the original retail purchaser of the product. How Long This Warranty Lasts The Warranty begins on the date of purchase by the original retail purchaser. The duration of the Warranty is as follows: Product Category Duration Guitars/Basses, Amplifiers, Pre-Amplifiers, Mixers, Electronic Crossovers and Equalizers 2 years *(+ 3 years) Drums 2 years *(+ 1 year) Enclosures 3 years *(+ 2 years) Digital Effect Devices and Keyboard and MIDI Controllers 1 year *(+ 1 year) Microphones 2 years Speaker Components (incl. speakers, baskets, drivers, diaphragm replacement kits and passive crossovers) and all Accessories 1 year Tubes and Meters 90 days [*denotes additional warranty period applicable if optional Warranty Registration Card is completed and returned to Peavey by original retail purchaser within 90 days of purchase.] What Peavey Will Do We will repair or replace (at Peavey's discretion) products covered by warranty at no charge for labor or materials. If the product or component must be shipped to Peavey for warranty service, the consumer must pay initial shipping charges. If the repairs are covered by warranty, Peavey will pay the return shipping charges. How To Get Warranty Service (1) Take the defective item and your sales receipt or other proof of date of purchase to your Authorized Peavey Dealer or Authorized Peavey Service Center. (2) Ship the defective item, prepaid, to Peavey Electronics Corporation, International Service Center, 412 Highway 11 & 80 East, Meridian, MS 39301 or Peavey Canada Ltd., 95 Shields Court, Markham, Ontario, Canada L3R 9T5. Include a detailed description of the problem, together with a copy of your sales receipt or other proof of date of purchase as evidence of warranty coverage. Also provide a complete return address. Limitation of Implied Warranties ANY IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. Exclusions of Damages PEAVEY'S LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED TO THE REPAIR OR REPLACEMENT OF THE PRODUCT, AT PEAVEY'S OPTION. IF WE ELECT TO REPLACE THE PRODUCT, THE REPLACEMENT MAY BE A RECONDITIONED UNIT. PEAVEY SHALL NOT BE LIABLE FOR DAMAGES BASED ON INCONVENIENCE, LOSS OF USE, LOST PROFITS, LOST SAVINGS, DAMAGE TO ANY OTHER EQUIPMENT OR OTHER ITEMS AT THE SITE OF USE, OR ANY OTHER DAMAGES WHETHER INCIDENTAL, CONSEQUENTIAL OR OTHERWISE, EVEN IF PEAVEY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. If you have any questions about this warranty or service received or if you need assistance in locating an Authorized Service Center, please contact the Peavey International Service Center at [phone] / Peavey Canada Ltd. at [phone]. Features and specifications subject to change without notice.

WARNING: When using electric products, basic cautions should always be followed, including the following:

Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. For example, near or in a bathtub, swimming pool, sink, wet basement, etc. Clean only with a damp cloth. Do not block any of the ventilation openings. Install in accordance with manufacturer’s instructions. It should not be placed flat against a wall or placed in a built-in enclosure that will impede the flow of cooling air. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding plug. The wide blade or third prong is provided for your safety. When the provided plug does not fit into your inlet, consult an electrician for replacement of the obsolete outlet. Never break off the grounding. Write for our free booklet “Shock Hazard and Grounding”. Connect only to a power supply of the type marked on the unit adjacent to the power supply cord. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point they exit from the apparatus. Only use attachments/accessories provided by the manufacturer. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. Unplug this apparatus during lightning storms or when unused for long periods of time. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. If this product is to be mounted in an equipment rack, rear support should be provided. Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient time. The U.S. Government’s Occupational and Health Administration (OSHA) has specified the following permissible noise level exposures: Duration Per Day In Hours

According to OSHA, any exposure in excess of the above permissible limits could result in some hearing loss. Ear plugs or protectors to the ear canals or over the ears must be worn when operating this amplification system in order to prevent a permanent hearing loss, if exposure is in excess of the limits as set forth above. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels such as this amplification system be protected by hearing protectors while this unit is in operation. SAVE THESE INSTRUCTIONS! Features and specifications subject to change without notice. Peavey Electronics Corporation • 711 A Street • Meridian • MS • 39301 [phone] • FAX [phone] • www.peavey.com ©2000

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